WATCH: Khizr Khan Talks About Son Humayun Khan’s Sacrifice

Khizri Khan, Democratic National Convention

Khan’s son died in Iraq. Screenshot from Democratic National Convention live feed.

Khizr Khan, whose son, Humayun Khan, a Muslim, was an American service member who died heroically in Iraq, directed a message to Republican nominee Donald Trump at the Democratic National Convention. “You have sacrificed nothing,” Khan said to Trump from the convention stage in Philadelphia.

“Do not take this election lightly. This is an historic election and I request you to honor the sacrifice of my son,” said Khizr Khan in his speech. He then waved a copy of the U.S. Constitution in the air and said: “Donald Trump, have you even read the constitution? I will gladly lend you my copy.”

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FULL: Khizr Khan son was 1 of 14 American Muslims who died serving – Democratic National ConventionFULL: Khizr Khan son was 1 of 14 American Muslims who died serving – Democratic National Convention Khizr Khan’s son, Humayun S. M. Khan was a University of Virginia graduate and enlisted in the U.S. Army. Khan was one of 14 American Muslims who died serving the United States in the ten years after the…2016-07-29T01:23:01.000Z

Khan’s speech comes as Democrats continue to criticize Trump for his proposal to ban all Muslim immigration to the United States. Basketball great Kareem Abdul Jabbar, who is also Muslim, spoke before Khan at the convention.

“If it was up to Donald Trump, [Humayun] never would have been in America,” Khan said. “Donald Trump consistently smears the character of Muslims… He vows to build walls and ban us from this country.”

Khan’s son was an Army captain born in the United Arab Emirates, who moved to Maryland as a small child, graduating from the University of Virginia before enlisting in the U.S. Army, said Hillary Clinton in a video introducing Khan’s speech.

In June 2004, Humayun Khan was serving in Iraq, and his infantry unit was guarding the gates of its base, when a suspicious vehicle appeared. “Captain Khan told his troops to get back, but he went forward. He took 10 steps toward the car,” said Clinton in the video. The car exploded, killing Khan, but the rest of the troops were saved because he stepped forward.

He was awarded the Bronze Star and Purple Heart posthumously, said Clinton, and he was 27-years-old when he died. “‘We still wonder what made him take those 10 steps,’ Khan’s father said in a recent interview,” Hillary Clinton said. “…All those things he learned in this country kicked in. It was those values that made him take those 10 steps.”

According to ABC, Khizr Khan’s son was one of 14 American Muslims who died serving in Iraq in the 10 years after the Sept. 11, 2001 terrorist attacks.

According to a U.S. Department of Defense press release, Captain Humayun S. M. Khan, 27, of Bristow, Virginia, died June 8, 2004, in Baquabah, Iraq, “after a vehicle packed with an improvised explosive device drove into the gate of his compound while he was inspecting soldiers on guard duty.” The release said that Khan was assigned to Headquarters Company, 201st Forward Support Battalion, 1st Infantry Division, Vilseck, Germany.

Arlington Cemetery says that Capt. Khan “was laid to rest with full military honors. Captain Khan was a Pakistani American who served in the U.S. army as an ordnance officer, being the senior-most community member to die in Iraq.” The press release on his funeral said, “His colleagues and superiors remembered him for his courage, honesty, sense of humor and grace while in the field, even under pressure. Captain Khan’s colleagues eulogized his exemplary services and praised him for the leadership he provided to his troops.”

A Muslim chaplain who spoke at the funeral highlighted “the ethnically-diverse group that had come to pay its respects to Captain Khan,” who was described in the release as “one amongst the growing number of Pakistani Americans in the U.S. Army.”